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Wiki Markup _Chronology of World History: Prehistory - AD 1491_ (ABC-CLIO, 1999) \[Ref. D11 .M3\]
- Charts of Ancient and Medieval Church History (Zondervan, 2001)
- History World Timelines
- New Catholic Encyclopedia, 2d ed.
Wiki Markup _New Westminster Dictionary of Church History_ (Westminster, 2008) \[Ref. BR95 .W496\]
- Oxford Dictionary of the Christian Church, 3rd ed. revised
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